The ratio of the upstream depth to downstream depth in a hydraulic jump for a rectangular, horizontal channel is given by: Y2 Y₁ = 1 [√ 1+8F 1] - This was derived using the steady, momentum equation which is written as: 0² Z₁ A₁ + ₁ = Z₂ A₂ gA₂ Note that the momentum equation above assumes that the bottom shearing force is negligible in a horizontal channel (i.e., zero bottom slope). a) Derive the hydraulic equation above (i.e., y2/yı).

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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Please answer item a and b.

The ratio of the upstream depth to downstream depth in a hydraulic jump for a
rectangular, horizontal channel is given by:
Y2
12/21 - 12/2√₁ +8F² 1]
1
Y₁
This was derived using the steady, momentum equation which is written as:
Z₁ A₁ +
-
=
gA₁ Z₂ A₂+
gA₂
Note that the momentum equation above assumes that the bottom shearing force
is negligible in a horizontal channel (i.e., zero bottom slope).
a)
Derive the hydraulic equation above (i.e., y2/yı).
b)
For the case where the channel slope is significant and that the bed friction
force is not negligible, derive the equation of y2/y1 for a rectangular channel.
If needed, use Manning's equation to express the friction force.
Transcribed Image Text:The ratio of the upstream depth to downstream depth in a hydraulic jump for a rectangular, horizontal channel is given by: Y2 12/21 - 12/2√₁ +8F² 1] 1 Y₁ This was derived using the steady, momentum equation which is written as: Z₁ A₁ + - = gA₁ Z₂ A₂+ gA₂ Note that the momentum equation above assumes that the bottom shearing force is negligible in a horizontal channel (i.e., zero bottom slope). a) Derive the hydraulic equation above (i.e., y2/yı). b) For the case where the channel slope is significant and that the bed friction force is not negligible, derive the equation of y2/y1 for a rectangular channel. If needed, use Manning's equation to express the friction force.
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